The biggest solar storm in five years is expected to bombard the Earth today, potentially upsetting airplane flights,GPS systems and electric power grids. The first effects of the storm hit at about … 7 a.m., says Joe Kunches of the Space Weather Prediction Center in Boulder, Colo. Kunches says the storm should last about a day.
On the “G1 to G5″ scale of geomagnetic storm intensity, with G5 being the worst, Kunches says this storm is expected to be a G3, considered to be a “strong” one. The storm has the potential to trip electrical power grids, although Kunches said power companies around the world have been alerted for possible outages. Solar storms can also disrupt GPS systems or make them less accurate. The storm can lead to communication problems and added radiation around the North and South poles, which will probably force airlines to reroute flights.